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avformat/flac_picture: clear padding area

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aviod use of uninitialized memory

Fixes: asan_heap-oob_1487fa4_4706_cov_364534849_cover_art.flac
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-31 17:31:21 +01:00
parent fff2953163
commit 13aa82bbbb
1 changed files with 1 additions and 0 deletions
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1
libavformat/flac_picture.c
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@ -110,6 +110,7 @@ int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
if (!(data = av_buffer_alloc(len + FF_INPUT_BUFFER_PADDING_SIZE))) {
RETURN_ERROR(AVERROR(ENOMEM));
}
memset(data->data + len, 0, FF_INPUT_BUFFER_PADDING_SIZE);
if (avio_read(pb, data->data, len) != len) {
av_log(s, AV_LOG_ERROR, "Error reading attached picture data.\n");
if (s->error_recognition & AV_EF_EXPLODE)